Importance of Plasma K+ Regulation - lecture
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Questions and Answers

What is the primary cause of hyperkalemia?

  • Decreased aldosterone release
  • Increased excretion of K+ in feces and sweat
  • Increased secretion of K+ (correct)
  • None of the above

    • What are the consequences of hyperkalemia?

  • Muscle weakness and respiratory failure
  • Cardiac arrhythmias and increased excitability of neurons and skeletal muscles (correct)
  • Increased secretion of aldosterone
  • None of the above

    • What is the primary cause of hypokalemia?

  • Increased aldosterone release
  • Kidney disease, diarrhea, and diuretics (correct)
  • Increased excretion of K+ in feces and sweat
  • None of the above

    • What are the consequences of hypokalemia?

    <p>Muscle weakness and respiratory failure</p> Signup and view all the answers

    Which hormones are secreted by the cardiac atria and ventricles in response to Na+ retention, expansion of the ECF volume, and increase in arterial blood pressure?

    <p>Atrial natriuretic peptide (ANP) and brain natriuretic peptide (BNP</p> Signup and view all the answers

    What are the effects of ANP and BNP?

    <p>Natriuretic, diuretic, and hypotensive effects</p> Signup and view all the answers

    What is the process of sodium excretion in the urine called?

    <p>Natriuretic</p> Signup and view all the answers

    What is the primary function of aldosterone?

    <p>To promote K+ secretion</p> Signup and view all the answers

    What is the primary cause of muscle weakness and respiratory failure in hypokalemia?

    <p>None of the above</p> Signup and view all the answers

    What is the primary cause of Na+ retention, expansion of the ECF volume, and increase in arterial blood pressure?

    <p>Increased secretion of aldosterone</p> Signup and view all the answers

    What are the consequences of increased aldosterone release?

    <p>Hypokalemia and muscle weakness</p> Signup and view all the answers

    What is the primary cause of increased aldosterone release?

    <p>Na+ retention, expansion of the ECF volume, and increase in arterial blood pressure</p> Signup and view all the answers

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